Intermediate Geometry: Being Sections V and VI of "geometry, Theoretical and Practical".W.B. Clive, University Tutorial Press Ld., 1908 - Geometry |
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Page 402
... four quantities A , B , C , D are called proportionals or are said to be in proportion . The statement of a proportion is best written in the form— A : B = C : D or but may also be written- A C B D ' A : B :: C : D . DEFINITION . A ...
... four quantities A , B , C , D are called proportionals or are said to be in proportion . The statement of a proportion is best written in the form— A : B = C : D or but may also be written- A C B D ' A : B :: C : D . DEFINITION . A ...
Page 405
... line PQ ? 9. A , B , C , D , E , F are six points in order on a straight line . Given that AB : BC DE : EF , prove that AB AC DE : DF , and that AC : DF BC : EF . = † See § 228 . = 10. A , B , C , D are four RATIO AND PROPORTION . 405.
... line PQ ? 9. A , B , C , D , E , F are six points in order on a straight line . Given that AB : BC DE : EF , prove that AB AC DE : DF , and that AC : DF BC : EF . = † See § 228 . = 10. A , B , C , D are four RATIO AND PROPORTION . 405.
Page 406
... four points in order on a straight line and a , b , c , d are four points in order on another . Given that ab cd = CD , prove that ad : bc = AD : BC , and that ac : AC = = AB , bc = bd : BD . BC , 11. Draw any straight line , and on it ...
... four points in order on a straight line and a , b , c , d are four points in order on another . Given that ab cd = CD , prove that ad : bc = AD : BC , and that ac : AC = = AB , bc = bd : BD . BC , 11. Draw any straight line , and on it ...
Page 436
... four triangles by its diagonals ; show that if two of these triangles be equal the remaining two are either equal or similar . 5. In Figs . 417 , 418 , 419 , join BE , CF ; then prove T. 11 and T.11c by means of Ar . 6 . 309. THEOREM ...
... four triangles by its diagonals ; show that if two of these triangles be equal the remaining two are either equal or similar . 5. In Figs . 417 , 418 , 419 , join BE , CF ; then prove T. 11 and T.11c by means of Ar . 6 . 309. THEOREM ...
Page 439
... four lines be proportional , the figures shall be proportional ; and , conversely , ( ii ) if the figures be proportional , the lines shall be proportional . For in the accompanying figure P : Q AB2 : CD2 , and R : S = EF2 : GH2 . = AAA ...
... four lines be proportional , the figures shall be proportional ; and , conversely , ( ii ) if the figures be proportional , the lines shall be proportional . For in the accompanying figure P : Q AB2 : CD2 , and R : S = EF2 : GH2 . = AAA ...
Other editions - View all
Intermediate Geometry: Being Sections V and VI of Geometry, Theoretical and ... Walter Percy Workman No preview available - 2023 |
Intermediate Geometry: Being Sections V and VI of Geometry, Theoretical and ... Walter Percy Workman No preview available - 2023 |
Intermediate Geometry: Being Sections V and VI of Geometry, Theoretical and ... Walter Percy Workman No preview available - 2019 |
Common terms and phrases
ABCD B.Sc base bisects centre of similitude Ceva's Theorem CHAPTER chord circles touch circumcircle collinear concurrent concyclic points Cons Cons.-Draw cyclic quadrilateral diagonals diameter dihedral angle divided equiangular EXERCISES externally figure Find the locus Geometry given circles given line given point given ratio given straight line harmonic range Hence hypotenuse intersecting planes irrational numbers LAOB LDPE lies in plane line drawn line joining line perpendicular mean proportional meet nine-point circle opposite edges orthocentre pair parallel planes parallelogram parallelopiped perpendicular Picture Plane plane X plane XX polygon Proof quadrilateral radical axis radii radius rational numbers rectangle contained remaining Theorems Required to prove respectively right angles segments similar triangles Similarly solid angle square tangents tetrahedron THEOREM.-If three lines triangle ABC Tutorial vertex vertical angle
Popular passages
Page 570 - If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
Page 584 - If from the vertical angle of a triangle a straight line be drawn perpendicular to the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the perpendicular and the diameter of the circle described about the triangle.
Page 575 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.
Page 424 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Page 10 - The historical part is concise and clear, but the criticism is even more valuable, and a number of illustrative extracts contribute a most useful feature to the volume.
Page 571 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Page 16 - The object of the UNIVERSITY TUTORIAL SERIES is to provide candidates for examinations and learners generally with text-books which shall convey in the simplest form sound instruction in accordance with the latest results of scholarship and scientific research. Important points are fully and clearly treated, and care has been taken not to introduce details which are likely to perplex the beginner. The Publisher will be happy to entertain applications from Schoolmasters for specimen copies of any...
Page 583 - If four straight lines be proportionals, the rectangle contained by the extremes is equal to the rectangle contained by the means...
Page 574 - If a parallelogram and a triangle be on the same base and between the same parallels, the parallelogram shall be double of the triangle.
Page 574 - Equal triangles, on equal bases, in the same straight line, and on the same side of it, are between the same parallels. Let...